Half to austin c



(No Model.)

A. H. MERRILL.

y TURN UP BED, No. 380,046. Patented Mar. 27 1888.

. I p M N. Packs. Photofithngnwher, Washington. ujc,

v UNITED STATES PATENT OFFIC ARTHUR H. MERRILL, OF HARTFORD, CONNECTICUT, ASSl GNOR OF ONE HALF TO AUSTIN C. DUNHAM, OF SAME PLACE.

TURN-UP BED.

SPECIFICATION forming part of Letters Patent No. 380,046, dated March 27, 1 8 8.

Application filed December 9, 1887. Serial No.257,922. (No model.)

To aZZ whom it may concern:

Be it known that I, ARTHUR H. MERRILL, of the city and county of Hartford, Connecti out, have invented certain new and useful Improvements in Turn-UpBeds, which improvements are described'in the following specification and areillustrated by the accompanying drawings.

The present invention consists of a series of springs applied in a peculiar manner to the case and mattress-frame of a turn-up bed, for the purpose of facilitating the usual operations of raising and lowering the mattress-frame.

The object of the invention is to oppose to the force of gravity, which affects the mattressframe variably in its changing positions, the elasticity of a cumulative series of coiled springs, which are arranged to operate in a similarly-variable manner, according to the position of the mattress-frame. f

The best manner in which I have contemplated applying the principle of my invention is illustrated in said drawings, in which Figure 1 is a front view of my improved bed, the mattress-frame being upright and a part of the case being removed. Fig. 2 is a central vertical section of the same. Fig. 3 is an inside view of one side of the bed-case. Figs. 4, 5, and 6 are enlarged details showing the mode of operation.

In the views, the numerall denotes the side rails of the mattress-frame, while 2 and 3 are the end rails of the same. Upon this frame, which is constructed in any ordinary or convenient manner, is stretched a spring fabric, 4, which is designed to support a mattress and other bedding, which are not shownin the drawings.

The numerals 5, 6, 7, 8, and 9 denote, respectively, the top, bottom, sides, and back of the bed-case, in which the mattress-frame is hinged or pivoted by means of a straight bar or rod, 10, which passes through side rails, 1, and rests in slotted cleats 11 and 11,'which are screwed to the sides 7 and 8 of the bed-case. The lower part of the bed-case is made deeper than the upper part of the same, for the purpose of enlarging the base of support of the entire structure, and also for the purpose of afl'ording convenient space within the bed-case for the springs, which are now to be described.

.tions of deflection; also, the

In the bottom chamber of the bed-case are three coiled springs, 12, 13, and 14, which are attached to bottom 6 by means of hooks 15, and to end rail 3 by screw-eyes 16. Springs 13 and 14' are attached to their respective screw-eyes 16 by means of cords 17 and 18. Spring 14 and cord 18 are collectively shorter than spring 13 and cord 17, which are in turn shorter than spring 12. Said books 15, by which said springs are attached to base 6, are located in the anterior portion of the said chamber of the bed-case. The described springs and attachments, being located in one end of the bed-case, as seen in Fig. 1, are duplicated by a like series of coiled springs and attachments of the same which are located in the otherend' of the bed-case, as indicated by dotted lines in the same figure.

All other features of construction of this bed will be readily understood from the drawings and from the mode of operation, which is now to be explained. I

When the mattress-frame stands upright in the bed-case, as in Figs. 2 and 4, spring 12, being at a slight tension, serves to hold the mattress-frame in that position. At the same time springs 13 and 14 are at no tension. When the mattress-frame is turned downward in the operation of lowering the same by hand,

springs 13 and 14 are brought into action we cessively and cumulatively, and when the mattress-frame reaches its horizontal position all of said'springs are at fulltension. In raising the mattress-frame from that position springs 14 and 13 are successively relieved of tension. Figs. 4and 6 show the positions of said springs, corresponding to the perpendicular and horizontal positionsof the mattress-frame, respect ively, and Fig. 5 exhibits the position of said springs when the mattress-frame occupies an intermediate position either in rising or fall-- ing. The result of this mode of operation is an approximately uniform tendency of the mattress-frame toward upriglitness in all posipull of said springs is in such a direction as to create but little tendency in the bed-case to follow the downward motion of the mattress-frame during the operation of lowering the latter for use.

Such being the construction and operation of my improved turn-up bed, I claim as my invention 1. In a turnup bed, a bed-case and a mattress-frame which is pivoted in said case, in combination with a series of cumulative coiled springs which are attached to said case at points unequally distant from their common point ofattachment to said mattressframe, substantially as and for the purpose specified.

2. In a turn-up bed, a bed-case and a mattress-frame which is pivoted in said case, in combination with a series of coiled springs which are provided with cords for the purpose of operating said springs in a successive and cumulative manner and are attached to said case and frame, together with said cords, instates of unequal slackness and tension, substantially as and for the purpose specified.

3. In a turn-up bed, a bed-case which is provided with an anterior chamber, in combination with a mattress-frame which is pivoted in said ease, and a series of coiled springs states of gradually-varying slackness and ten= sion by means of cords which form loose attachments for a portion of said springs, substantially as and for the purpose specified.

In testimony whereof I hereunto set my name in the presence of two witnesses.

ARTHUR H. MERRILL.

WVitnesses:

XVILLARD EDDY, JOHN H. WHITE. 

